Accessibility fixes for windows high contrast buttons (#2826)

* AB#1060 general fix for disabled buttons in windows high contrast mode

* AB#1051 narrator will read aloud favorites dropdown options now

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Co-authored-by: Rena Chen <rechen@microsoft.com>

desktop/src/@batch-flask/ui/buttons/button.scss

@@ -180,5 +180,9 @@ bl-button {
 @media (forced-colors: active) {
     bl-button {
         border: 1px solid currentColor;
+
+        &.disabled {
+            opacity: 0.3;
+        }
     }
 }

desktop/src/app/components/layout/pinned-entity-dropdown/pinned-dropdown.html

@@ -11,7 +11,7 @@
             (contextmenu)="onContextMenu(favorite)">
 
             <bl-clickable class="dropdown-item favorite-item" (do)="gotoFavorite(favorite)">
-                <span aria-hidden="true">
+                <span attr.aria-label="{{favorite.name || favorite.id}}">
                     <i class="entity-type fa" [ngClass]="entityIcon(favorite)"
                     [title]="entityType(favorite)"></i>
                     {{favorite.name || favorite.id}}